Quote:
Originally Posted by warner41
I picked up a new Gen4 G22 upper with the intent of buying a Gen4 G31 soon. The 31 will definitely be my next complete purchase. Parts to finish some other builds I have in the works is another story.
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The g31 and g22 are identical aside from the barrel. Thats the only thing you need to swap to shoot the other caliber. Mags are the same too.